<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="(item, index) in cartList" :key="item.id">
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="item.isChecked == 1"
              @change="updateChecked(item,$event)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl" />
            <div class="item-msg">
              {{ item.skuName }}
            </div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ item.skuPrice }}.00</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:void(0)"
              class="mins"
              @click="handler('minus', -1, item)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              minnum="1"
              class="itxt"
              :value="item.skuNum"
              @change="handler('change', $event.target.value * 1, item)"
            />
            <a
              href="javascript:void(0)"
              class="plus"
              @click="handler('add', 1, item)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ item.skuNum * item.skuPrice }}</span>
          </li>
          <li class="cart-list-con7">
            <a
              class="sindelet"
              @click="deletaCardById(item)"
              style="cursor: pointer"
              >删除</a
            >
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="isAllChecked&&cartList.length>0" @click="updateAllChecked"/>
        <span>全选</span>
      </div>
      <div class="option">
        <a @click="deleteAll">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ totalPrice }}</i>
        </div>
        <div class="sumbtn">
          <a class="sum-btn" @click="$router.push('/trade')" style="cursor:pointer">结算</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import throttle from "lodash/throttle";
export default {
  name: "ShopCart",
  data() {
    return {
      cartList: [],
    };
  },
  computed: {
    totalPrice() {
      //计算总价
      return this.cartList.reduce((pre, cur) => {
        if (cur.isChecked == 1) {
           return pre += cur.skuNum * cur.skuPrice;
        }else{
          return pre;
        }
      }, 0);
    },
    isAllChecked() {
      //当所有的商品都选中时，全选按钮选中
      return this.cartList.every((item) => item.isChecked == 1);
    },
  },
  mounted() {
    this.getData();
  },
  methods: {
    getData() {
      //获取订单列表数据
      this.$store.dispatch("getCartList").then((res) => {
        if(res.length>0){
          this.cartList = res[0].cartInfoList;
        }else{
          this.cartList = [];
        }
      });
    },
    handler: throttle(function (type, disNum, cart) {
      //操作购物车
      switch (
        type //判断点击的是减号还是加号
      ) {
        case "add":
          disNum = 1;
          break;
        case "minus":
          disNum = cart.skuNum > 1 ? -1 : 0;
          break;
        default:
          if (isNaN(disNum) || disNum < 1) {
            //如果用户输入不合法
            disNum = 0;
          } else {
            disNum = parseInt(disNum) - cart.skuNum;
          }
      }
      this.$store
        .dispatch("addCart", { skuId: cart.skuId, skuNum: disNum })
        .then((res) => {
          if (res == true) {
            this.getData();
          }
        });
    },500),
    deletaCardById(cart) {
      //删除购物车
      this.$store.dispatch("deleteList", cart.skuId).then((res) => {
        if (res == true) {
          this.$message({
            message: "删除成功",
            type: "success",
            duration: 1000,
          });
          this.getData();
        }
      });
    },
    updateChecked(cart, e) {
      //更新选中状态
      this.$store.dispatch("updateChecked", {
        skuId: cart.skuId,
        isChecked: e.target.checked ? 1 : 0,
      }).then((res) => {
        if (res == true) {
          this.getData();
        }
      });
    },
    deleteAll(){//删除选中商品
       this.$store.dispatch('deleteAllCart').then((res)=>{
         if(res){
           this.getData()
         }
       })
   
    },
    updateAllChecked(event){//修改全选状态
      let isChecked = event.target.checked?'1':'0';
      this.$store.dispatch('updateAllChecked',isChecked).then((res)=>{
        if(res){
          this.getData()
        }
      })
    }

  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 17%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>